grails-cascade-validation

This plugin establishes a 'cascade' constraint property for validateable objects. If "cascade:true" is set on a nested object, the nested object's validate() method will be invoked and the results will be reported as part of the parent object's validation.

When the cascade: constraint is added on the telephoneType property, this enables nested validation. When the phoneNumber.validate() method is called, the telephoneType.validate() method will also be invoked. Field errors that are added to the telephoneType will also be added to the parent phoneNumber object.

This plugin was originally based on a blog post by Eric Kelm and is used here with Eric's permission.